Add cameras, objects, and spheres to Python module.

1 files changed, 52 insertions, 7 deletions

diff --git a/libdimension-python/Scene.c b/libdimension-python/Scene.c
index 29a623a..0e43ec9 100644
--- a/libdimension-python/Scene.c
+++ b/libdimension-python/Scene.c
@@ -18,22 +18,57 @@
  * <http://www.gnu.org/licenses/>.                                       *
  *************************************************************************/
 
-#include "Canvas.h"
-#include "Scene.h"
+#include "dimension-python.h"
 
 static int
 dmnsn_py_Scene_init(dmnsn_py_Scene *self, PyObject *args, PyObject *kwds)
 {
-  static char *kwlist[] = { "canvas", NULL };
+  dmnsn_delete_scene(self->scene);
+  self->scene = dmnsn_new_scene();
+
+  static char *kwlist[] = { "canvas", "camera", "objects", NULL };
 
   dmnsn_py_Canvas *canvas;
-  if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist,
-                                   &dmnsn_py_CanvasType, &canvas))
+  dmnsn_py_Camera *camera;
+  PyObject *objects;
+  if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!O!O!", kwlist,
+                                   &dmnsn_py_CanvasType, &canvas,
+                                   &dmnsn_py_CameraType, &camera,
+                                   &PyList_Type, &objects))
     return -1;
 
-  dmnsn_delete_scene(self->scene);
-  self->scene = dmnsn_new_scene();
   dmnsn_scene_set_canvas(self->scene, canvas->canvas);
+
+  if (!PyObject_CallMethod((PyObject *)camera, "initialize", ""))
+    return -1;
+
+  /* Account for image proportions in camera */
+  dmnsn_matrix stretch = dmnsn_scale_matrix(
+    dmnsn_new_vector(
+      (double)canvas->canvas->width/canvas->canvas->height,
+      1.0,
+      1.0
+    )
+  );
+  camera->camera->trans = dmnsn_matrix_mul(camera->camera->trans, stretch);
+  dmnsn_scene_set_camera(self->scene, camera->camera);
+  self->scene->background = dmnsn_white;
+
+  Py_ssize_t size = PyList_Size(objects);
+  for (Py_ssize_t i = 0; i < size; ++i) {
+    PyObject *obj = PyList_GetItem(objects, i);
+    if (!PyObject_TypeCheck(obj, &dmnsn_py_ObjectType)) {
+      PyErr_SetString(PyExc_TypeError, "Expected a list of objects");
+      return -1;
+    }
+
+    if (!PyObject_CallMethod(obj, "initialize", ""))
+      return -1;
+
+    dmnsn_py_Object *object = (dmnsn_py_Object *)obj;
+    dmnsn_scene_add_object(self->scene, object->object);
+  }
+
   return 0;
 }
 
@@ -44,7 +79,17 @@ dmnsn_py_Scene_dealloc(dmnsn_py_Scene *self)
   Py_TYPE(self)->tp_free((PyObject *)self);
 }
 
+static PyObject *
+dmnsn_py_Scene_raytrace(dmnsn_py_Scene *self)
+{
+  dmnsn_raytrace_scene(self->scene);
+  Py_INCREF(Py_None);
+  return Py_None;
+}
+
 static PyMethodDef dmnsn_py_Scene_methods[] = {
+  { "raytrace", (PyCFunction)dmnsn_py_Scene_raytrace, METH_NOARGS,
+    "Raytrace a scene" },
   { NULL }
 };